Band-saw mill



(No Model.) l I l l 4 sheets-sheen 1. D. D. WILLIAMS 8U 1.1). WILSON.

BAND SAW MILL.

' V No. 362,410. A Patented May 3,1887.

{illllhinna H li www N. PETERS. Phmmmnpner. wm; nnnnnn c.

(No Model.)

A 4 Sheets-Sheet; 2. D. D.,WILLIAMS & J. D. WILSON.V

BAND SAW MILL.

Patented May 3, 1887.

Y `4v`sneetssheet 3; D. D..WILLIAMS 8u J. D. WILSON.

(No Mode-1,)

' BAND SAW MILL.

No. 362,410. PatentedMay 3, .1887.

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N. PETERS. Phmvmhoglwhnr, Washmgion. C)4 C.

4 sheets-sheen '4.'

D. D. WILLIAMS 8v J. D. WILSON.

BAND SAW MILL.

, l 4 l l l No 362 l/Qv'g? atented 1887 Z N. PETERS( meruxmmplmr.wamnglw. nc.

\ UNITED y STATES PATENT'f Fries.

DELL. D. l/VILLIAMS, OF MUSKEGON, AND JAMES D. VILSON, OF MONTAGUE,

MICHIGAN.

BAND-SAW M ILL.

SPECIFICATION forming pari. of Letters Patent No. 362,410, dated May 3,1857.

Y Application filed March 23, 1856. Serial No. 196,233.. (No model.)

To @ZZ whom it may concern:

Be-it known that we, DELL. D. WiLLIAMs and .Lines D. WILsoN, citizens ofthe United States, residing respectively at Muskegon and Montague, inthe county of Musk egon and State of Michigan, have invented certain newand useful Improvements in Band-Saw Mills;y and we do declare thefollowing to be a full7 elear, and exact description of the invention,such' as 1o will enable others skilled in the art to which itappertainsto make and use the same, reference lteng had to theaccompanying drawings, and to the letters and figures of referencemarked thelcon, which form a part of this V1 5 specification.A

Our invention relates toan improvement in band-saw mills7 and moreparticularly to that class of machinery wherein band saws are adapted tobe used in mills for cutting logs 23 Vinto boards, the.; and theinvention consists in the construction, arrangement, and combina` tionof parts, substantially as will be hereinafter described, and then moreparticularly pointed out in the claims.

In the annexed drawings illustrating our invention, Figure l is asideelevation of our improved band saw mill, showing the band wheels, theposition of the outside bearings for the shafts, the automatic devicesfor operating the saw-guides, and the accompanying parts of the machine.Fig. 2 is a side elevation of the main frame, the yokes, saw-guides,slides, counter-weights, dsc., with the baudwheels and outside bearingsremoved. Fig.

3 is a front elevation of the complete machine,

\ without the automatic arrangement for operating the saw-guides. Fig. 4is also a front elevation, showing the inside yoke and mechanism forraising and lowering the same, the

4o lower sawguides, the vertical rod for operating the guides, and theautomatic mechanism for giving motion to the rod. Fig. 5 is a plan viewshowi ng the outside yoke, the main frame, and the driving-pulley, theupper band-wheel,

rack-wheel bracket with mechanism for operating the same, and the uppersawguide. Fig. -6 is a plan view showing, principally, the main frame,the drivingpulley and its shaft, the inside yoke, the rack and slidesfor the rack- 5o bracket, balance weights and levers, the lowersaw-guide, and the automat-ic mechanism for `may be occasioned by wear.

operating the same. Figs. 7, 8, and 9 are enlarged detail views of thesaw-guide. Fig. l() is an enlarged side elevation of the saw-guide, andFig. l1 is a detail of aportion of the same. 55 Fig. l2 is a detail viewof a portion ofthe devices by means of which the carriage operates tooffset the sawguides. Fig. 12 is a view showing the relative arrangementof the inner and outer yokes. Fig. 13 is a detail view of 60 thedoublepawled lever and ratchet-wheel.

Like letters indicate like parts.

A represents the bed-plate or bottom frame of the machine, and it isprovided with a ceu` trai opening for the main driving-pulley, which ismounted on a shaft journaled in boxes located on the upper surface ofthe bedplate on each side of the opening. The main vertical frame iscomposed of the front plate, B, and side plates, b b, securely fastenedtogether in a vertical direction, preferably by means of flanges formedon the frontplate for the purpose, said parts being also preferablyfastened to the bed-plate by means of anges extending' around the threesides. The front plate, B, is formed with slides on both sidesprojecting past the outside of the side frames, b, and on these slidesthe inner yoke, C, travels up and down vertically, it being held inposition by means of the plates c, (see Fig. 5,) securely 8o fastenedthereto, so as toA form grooves of a suicient size to permit of an easymovement without shaking.

The horizontal projecting arm of the yoke C is provided on the extremitywith a gib, the purpose of which is to take up any slack that This gibis Set up in place by means of screws, as shown. The yoke is alsoprovided with two bosses, c' and c. The upper boss, c', is the fulcrumon 9o' which the outeryoke oscillates, the half-collar v of the saidboss, which projects slightly past the face of the casting, beingrounded on the face to 4allow of the necessary adjustment for the outeryoke. Thelower boss, e, also has a 9 5 collar, rounded on the face,similar to that of c', against which collar the outer yoke is screwed uptight. A studbolt, c', is also provided near the end of the upper arm ofthe yoke, and is used likewise for tightening both Ico the yokestogether.

The mechanism for vertically raising or lowering the yoke G consists ofa screw, D, a nut, d, provided with pins on each side, which areparallel with the face of' frame B, a ratchetwheel, d, and aratchet-handle, d, constructed with a double pawl for working the screwin either' direction. The upper end of the screw rests directly belowthe center-of the yoke, (sec Fig. 4,) and the nut d is threaded toreceive the screw. By working the ratchet-handle in either direction theratchet-wheel and screw rise and fall along with the yoke. l

The counter-balance for the yoke C consists of a forked lever, E, (seeFigs. 2, 4, and 6,) a connecting-link. c, and a weighted lever, c'. Theforked lever E is fashioned with a groove on the under side of eachtongue of the fork. This construction allows the lever to rest on thebody of the vertical plate B of the main frame. The uppcrside ofthef'orkis also provided with grooves, in which rest the projecting pins ofthenut d. The weighted lever e is fulcrumcd upon jaws cast on the outsideof the frame, and is located at right angles to the forked lever E.These two levers are connected together by a double jawed vertical link.The weight is affixed inovably to the lever, so as to allow the properadjustment to be given to balance nicely the yoke and its attachmentsand to give the saw its proper tension or strain.

F represents the outer yoke, which carries the upper band-wheel shaft.This yoke, as shown in Fig. 3, is provided with three journal-boxes. Theoutside journal-box is adj ustablein the outer arrn of the yoke F.`.Near the center of the yoke, below the middlejournal-bearing, a slotis provided, the lower portion of which is circular and ts the boss c onthe yoke C. A block, f, is inserted between the upper half of the bossand the under side of the journal-box, which forms the fulcrum on whichthis yoke oseillates. The slot is preferably covered with a flangesecured in place by means of a bolt tapped into the center of the boss.Theyoke is further provided with slots opposite the boss c and bolt c".These slots extend in such lines and are of such length as to allow ofthe necessary adjustment ofthe yoke, which will effect the desiredadjustment of the band-wheel and its shaft. Two set-screws, ff, situatednear the bolt c', assist in the adjustment.

On opposite sides of the machine are situated two slides, G G, which aresecurely fastened to the inain vertical frames, Figs. 2 and 3. The slidenearest the wheels is formed with a rack extending nearly its wholelength, and of sufficient width to prevent any binding between its sidesand the wheel operati ng therein.

A frame or bracket, H, extends across the face of the machine and movesin a vertical direction upon the slides G, already described.

and down without shaking, said gib being set up by a series of screws,as shown in Fig. 2. The end of the bracket away from the bandwlieelportion of the machineis provided with a plate, h, (see Fig. 5,)fastened thereto and constituting the slide at this end. The bracket His also provided with a boss, which serves as one of the bearings forthe vertical rod It, which works the saw-guides. The outer end of thebracket is provided,in addition to plate It, with a bearing for cariying the rackwheel spindle.

I represents a bracket for carrying the upper saw-guide, and thisbracket is securely fastened to the sliding bracket H, and is providedat the vertical rib with a boss for carrying the wheel end of therack-spindle. A diagonal brace, as shown in Fig. 5, is fastened to thebracket ll and the bracket I, and aids in stiffening the end of thelatter sidewise. i is the raek-wheel, and i the spindle for working thesame, said spindle carrying at its outerl end a hand-wheel. foroperating it, and said rack-wheel meshing with the rack upon the slideG, as shown in the drawings. j representsa spindle for moving the outeryoke, F, when it is desired to bring the upper bandwl1eel,which iscarried by said yoke, into position. This spindle is secured at one endby proper means to th'e yoke (l, and works in a boss cast on the saidyoke and tapped to receive it, thc other end of the spindle beingprovided with a hand-wheel for operating it;

aml,fnrther, the spindlejis fastened into abearing secured to the underside of the projecting arm ofthe yoke C. (See Fig. 4.) The inner end ofthe spindle is adapted to bear against the yoke F, so that when rotatedin its bearings it may adjust said yoke F.

K represents a rope-sheave journaled bctween two brackets, 7c lr,fastened to the main frame. A wire rope or chain is attached at one endto the upper saw-guide b1'acket,l,and then passes over the sheave K, andis fastened at the other end to the counterbalanceweight L.

m represents a bracket fastened to the bedplate and carrying the underor lower guide for the saw, while n n are the clamping-jaws ofthe upperand lower saw-guides, and are situated opposite in line with each other,as shown in Fig. 2. An enlarged side view of the saw-guides a is shownin Fig. 10, and Figs. 7, 8, 9, and 1l represent details of the same.

O is the bottoni plate, formed on the under surface with a recess, whichfits upon the brackets used to carry the guides. A gib, o, is alsoinserted into this recess, and is used for tightening the guide tothebracket in conjunction with screws for the same purpose. This platealways remains stationary when once in position, and is provided with aslot, Fig. 7, for the saw, said slot being of sufficient width to allowof the saw being moved from the cut while the carriage is reversing.

P designates the upper plate, which carries the forward guides. Thisplate is pivotcd to IOO ZIO

the lower plate at the bolt o and is formed on the under surface with alug, p, through which is screwed a bolt, Fig. 8. This bolt is used forguiding the saw in line with the carriage and also for giving thenecessary range of movement laterally to this plate in clearing ythe sawfrom the-log. Provision is also made for connecting the moving apparatusto this plate by a bolt at p". The forward end of the plate P is kept inposition by the bolt q, Fig. ll. This bol-t is made square beneath thehead, and is fastened securely to the plate O at .the end of the narrowarm. The slot shown at p fits the square portion of the bolt, and is ofsufficient length to give the necessary adjustmentto the plate.Boltqisprovided, also, with a large head, and when fastened in its placejust clears the top ofthe plate enough to allow the latter to movelaterally, but not to lift up.

Q, represents an upper plate, which carries the guides for the back ofthe saw. is preferably formed with a lip on each side for inclosing theplate P, and fastened to the plate Q are two brackets, q, in whichisjournaled the disk q. This disk is preferably formed of cast iron witha steel rim, and runs' in contact with the back of the saw, receivingthe thrust therefrom. A long slot is made in the plate Q, so that it maybe moved forward as the saw becomes narrower. The guidebloeks p p" areformed, in general, of hard wood, and are inserted into recesses on theplates and kept in position by iron plates of any suitable kind fastenedto 4the casting. The blocks are adjusted to the saw by means of anyconvenient device, such as screws tapped into the casting. v

The necessary lateral adjustment of the sawgnides is accomplished byoperating a rod, l?, the lower end of which rests upon the bedplate,while the upper end enters a journal provided therefor on the plate orbracket H. The lower journatbox is fastened to the main frame, and isdesignated by 1', Fig. 3. Secured to the rod B are the lever-arms S S,which serve to operate the saw-guides. They are connected by rods S'with the plate P of the saw-guide (See Figs. 5 and 6.) These connectingrods are provided with a right and left hand screwed coupling forlengthening or shortening the rods.

The automatic mechanism for actuating the rod R, which is thus connectedwith the sawguides, and in consequence of this actuation of the rod R-offsetting the saw-guides, consists of a shaft, T, (see Fig. 1,) placedhorizontally below the frame of the saw-carriage. On this shaft issecured a friction-wheel, t, which`re ceives its motion from africt-ionbar, t", forming. part of the saw-carriage. The shaft T is alsoprovided with a double-ended lever, a, having a set-bolt passing througheach end for regulatingthc throw of theleveru. The lower end of lever ais fastened to the double-ended lever, and the upper end is connected bya rod with the lever u", whichis fastened to the upright rod R. TheshaftrT is provided with a This platev solid collar, a, Fig. l, to theface of which two dowel-pins are fastened. (See Fig. 4t.) A loosecollar, V, which is placed next the face of thesolid collar u, isprovided with four holes drilled into the face, two of which areopposite each other and receive the dowel-pins on the collar u, thisarrangement constituting the connections by which the collar isrevolved. The other two holes, opposite each other and in a line atright angles to the first two, contain spiral springs, Fig. l, whichserve the purpose of giving the doublevarmed lever the amount of tensionnecessary to effect a change in its position.

V is a loose ring, secured by a feather to the shaft T, and V is a nutfor setting up the saine on either side of the doublearmed lever, andbetween the loose collars are inserted leather washers, which assist thefriction and also keep the faces from cutting while the shaft isrevolving. The shaft T isjournaled in two boxes, the outside box beingcarried on a bar, V,'pivoted'atw/ and weighted at the outer end, Fig. 4.This arrangement affords adjustability for the friction-wheel, andconsequently keeps it continually in contact willi the frietion-bar.

From this description of the combination and arrangement of the severalparts of the machine the operation will be evident, for it will be seenthat as the saw-carriage travels in either direction continuous motionwill be imparted to the friction-wheel shaft T for operating` theautomatic mechanism which acts upon the guides. Vhen the double-.armedlever is brought to a stop, the friction between the lever and theleather rings is sufficient to keep the whole arrangement in positionuntil the carriage reverses, when the lever is thrown to the other sideand the same effect is produced, for the friction-bar t, operating onthe pulley t, will revolve the same and rotate the shaft T. This willtilt the double-ended lever and oseillate the lever u' to one side, andthe lever a being connected with the vertical rod R by means of the roda, said rod R will be rotated, and will, through its connectingleverage-to wit, arms S S and rods S S, with the saw-guides-offset saidguides. The collar u on the shaft T is fastened rigidly to the shaft.The collar V is loose upon the shaft, but is carried around with theshaft when it revolves by means ofthe dowelpins, which/12o are placed onthe collar u and'entcr recesses in collar V, and by means, also, of thesprings!" The collar adjacent to collar V is loose on the shaft, and isthat which carries the stop-lever u. The collar V is also looselymounted, but` is feathered to the shaft. The nut V keeps the wholeseries of collars in properposition, there being leather wshersinterposed between the collar V and that carrying lever it and betweenthe latter and collar V. The frictionpulley t being tight on the shaft,when the carriage moves in one direction, it will roll the pulley in thesame direction.r The action of the springs against collar V during thismotion serves to keep the series of collars together; consequently allthe rings or collars move in the same direction until the lever ustrikes the stop on one of its ends. The ring to which the lever n isconnected then stands still, while the rest of them revolve along withthe shaft. W'hen the carriage reverses, the lever u is tilted reverselyuntil it strikes the opposite stop, when the same continuity ofrevolution ofthe other parts proceeds. The leather washers are merelyused by compression to turn the collar having the lever u thereupon, andwhen said collar stops the friction is reduced to a minimum by the useof the leather. The nut on the end merely regulates the distancerequired to operate the device to the best advantage. This automaticmovement offsets the saw from the log when the carriage is beingreversed, and when the carriage is advancing through the cut the guidesare, by the motion of the friction-wheel, kept rigidly in their places.Although we adopt this automatic arrangement for moving the guides, thesame results can be attained by the use of a foot'lever.

X designates the outside bearing for the driving shaft. (See Figs. l and3.) This bearing is securely bolted to ther side frame of the machine.The journal-box is adjustable in an upward direction and is set up bymeans of a screw and jam-nut. The upper journal-box on the arm F is alsoadjustable and is set up in a similar manner. The lower wheel, Y, ispreferably constructed entirely of cast-iron. Itis preferably furnishedwith a double set of arms and is clad on the periphery with a woodenrim. The upper wheel, Z, is preferably constrncted with a castironcenter having double arms,awrought-iron rim, and wroughtiron spokes, theconstruction and formation being similar to that shown in Figs. l and 3.The periphery of the cast-iron center, Fig. 3, is formed with an unevensu rface,and is drilled to receive the rods which serve as spokes forthe wheel. The surface for each row of spokes is formed at right anglesto the rod, so that thejanrnut will bed down evenly on its face. Theouter rim is drilled with holes corresponding in number to the number ofspokes used, and are arranged in a double row around the wheel. Theoutsides oflhesc holes are countersunk and the spokes made to tit. Acorresponding number of holes are drilled in the cast center and tappedto receive the inner screwed end of the spokes. After the spokes areproperly secured to their place a jam-nut provided on each is tightenedagainst the rim of the casting. In Fig. l each alternate line of spokesis constructed in the same way, Z representing in Fig. 3 the outsiderows, while Z" represents the inner rows, which cross each other. Thiswheel is also generally clad with wood at Z', and is of the same widthas the un der wheel. The shafts that carry these wheels are slightlytapered to receive the hubs of the wheels, and by this method ofconstruction a perfect fit is obtained at the outer end of the hub. Theshaft is screwed between the hub and the outside bearing, the nuts onthis portion serving to keep the wheel in place.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

l. The combination of the guides G G, the bracket H, movable thereon,the bracket I, carried by the bracket H, the counterbalaneeweight L,suspended by a wire rope, which passes around the pulley K and issecured to the bracket I, the vertical rod R, operated automatically bya suitable leverage connection with the log-carriage, the sawgnidcs,constructed as described, and the arms S S and rods S S', for connectingrod R with said guides, substantially as specified and shown.

2. In a band-saw mill, the automatic meehanism for offsetting thesawguides,\vhich consists of a shaft, T, a friction-wheel, t, securedthereon, the traveling log-carriage having a friction-bar, t, in contactwith said frictionwheel, the rigid collar u', sliding collar V, andloose collar V', and the lever-carrying collar, said collars u and Vbeing connected by interposed springs and pins, while the other collarsare separated by washers, the horizontal double-ended lever u, carriedby the lever-carrying collar, the vertical lever-arm n', connected tolever il., rock-shaft R, having arm a, connected to arm a, and arms S,connecting-rods S,and the sawguides,constructed as described, allarranged substantially as set forth.

3. The combination of the shaft T, frietion wheel f., secured thereon,the traveling logcarriage having a friction-bar, t, in contact with saidfriction-wheel, the pivoted weighted lever XV, connected to theextremity of the shaft T, the series of collars arranged upon saidshaft, as described, the horizontal doubleended lever u, carried by thelever-carrying collar, the vertical lever-arm uf, connected to lever u,the rock-shaft F, having arm u, conneeted to arm a', and arms S,connecting-rods S, and the saw-guides, all arranged and operatingsubstantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

DELL. D. VILLIAMS. JAMES D. VILSON. \\"itncsses:

WILLIAM J. BAXTER, HENRY DoNviLL'n.

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